Burner for gas-furnaces



W. P. BOYLE.

BURNER FOR GAS FURNACES. APPLICATION FILED OCT-30,19l8.

Patented Jan. 13, 1920.

INVENTEI'R W P- B El'YLE. BY W A'r'r DRNEY WILLIAM P. BOYLE, OF SPRINGFIELD, MASSACHUSETTS. I

BURNER FOB GAS-FURNACES.

Specification of Letters Patent.

Application filed October 30, 1918. Serial No. 260,372.

To all whom it may concern: Be it known that I, WILLIAM P. BOYLE, a citizen of the United States of America, and resident of Springfield, in the county of Hampden, and State of Massachusetts,

a mixture of the air and gas in advance of. 4

combustion, and so as to insure complete combustion of the gas.

Another object of the invention is to provide a gas furnace with gas and air feeding means so arranged that back fire in the fuel conduit is rendered impossible, so that the putting out of adjoining or neighboring burners of the same, or another system, will lfJie rendered impossible, owing to such back 25 I With the above and other objects in view, the invention relates to certain combinations, constructions and arrangements of parts clearly described in the following specification, and illustrated in the accompanying drawings, in which,

Figure '1 is a vertical sectional view through my improved burner.

Fig. 2 is a plan view thereof.

Fig. 3-is a detail end view of the air inlet of the burner. V

Fig. 4 is a detail end view of the gas'inlet of the burner.

Fig. 5 is a detail view, partly' in section,

on a reduced scale, showing the arrange- I ment of a pair of burners with a gas furnace.

Referring to the accompanying drawings, A designates a suitable gas furnace having an outer wall 5 which is provided with one or more openings 6, the sides of which diver e inwardly.

(Tne or more burners 7 are arranged adjacent to the openings 6 so as to pro ect the combined air and fuel stream through the openings 6, said burners being spaced relative to said openings so that air will be sucked through the openings by the combined air and gas stream.

Each burner 7 consists of a T-casting or body, which provides an internally threaded gas inlet 8, an internally threaded air inlet 9, and an internal'partition 10, which divides the interior of the T-shaped casting lntoa gas chamber 11,- and an air chamber 12, the gas chamber 11 having normal open communication with the gas inlet 8 and the air chamber 12 having normal open co-mmunication with the air inlet 9.

A burner tube 13 is threaded at its lower end in a threaded opening 14, formed in the partition 10, and the opposite end of said burner tube projects through the outlet 15 of the T-shaped body. A

The outer end of the burner tube 13 is formed with a converging mouth 16, adapted to cause a concentrated flow of the air through said burner tube.

A gas nozzle collar 17 hasa pendant externally threaded flange 18 which is threaded in the outlet 15, andthe outer end of said nozzle is provided with a reduced mouth 19, adapted to concentrate the gas stream flowlng around the burner tube.

The burner tube is spaced concentrically from the gas nozzle member, and said burner tube is provided I with spacing lugs 13 adapted to maintain said burner tube congentrically spaced from the gas nozzle memer.

Air is supplied to the central tube by means of an air pipe 21 which is connected with the inlet 9, and gas is supplied to the annular space around said tube by means of the pipe '20, which is connected with the in- Patented Ja'n. 13, 1920.

let-8. The pipes 21 and 20 are connected ing pressure is maintalned by means ofsuitable blowers or other devices.

The air flows through the feed conduit or pipe 21 to the combustion point at the tip ofthe burner tube 13 without being mixed with gas and the gas flows through the air conduit or pipe and through the space between the gas nozzle and central tube without being mixed with air, so that it is impossible for the fire to travel backwardly in either pipe since gas alone or air alone will not support combustion.

Since the gas and air discharge into the atmosphere at the same time, they are mixed only at the point of combustion.

The gas'is supplied to the air in an annular stream which surrounds the air stream, whereby the gas is prevented from escaping into the atmosphere without being mixed with air, and, therefore, being properly burned" It will be seen that the relation of the gasnozzle to the air tube permits of the increase or decrease of the diameter of the gas stream projected around the burner tube, by threading or 'unthreading the gas nozzle on the body of the burner In order to lock the member 17 in adjusted position against the outlet 15, a suitable locking device, such as a set screw 2-4;

may be arranged along-the outlet to bear against the gas nozzle 17 I claim 1. A gas burner consisting of a body having separate-inlets and a partition dividing r the body into independent chambers, a tube in adjusted position.

2. A gas burner for industrial furnaces consisting of a hollow body formed with separate inlets and a sin le outlet, a partition within said body dividing the body'into separate chambers, said partition having an internally threaded open1ng,'a tube threaded in said opening and extending through the outlet, and a nozzle threaded in the outlet and inclosing the outer end of the tube, the inner wall surface of the nozzle being provided with"an inwardly beveled terminal portion and concentrically spaced from the outer wall surface of the tube to provide an annular passage there'between, the tube be ing in direct communication with one of the chambers of said body and not in communication with the other of said chambers, and the annular space between the nozzle and the tube being in communication with the other chamber and not with the first chamber.

3. A gas burner for industrial furnaces consisting of a T-shaped body formed with opposing inlets and a, single outlet'disposed on a line between the inlets, a partition within said body dividing the same into separate chambers and separating the inlets from each other, said partition having an opening therein, a tube connected with said opening to receive a supply of air through the inlet in communication there-. -with, and a nozzle having a flange threaded.

into the outlet and surrounding and'spaced concentrically from the tube to receive a supply of gas from the other inlet, the outer end of the tube having an inwardly deflected mouth and the outer end of the nozzle having an inwardly deflected portion surrounding the mouth of the tube.

Signed by me at Springfield, Mass.

WILLIAM P. BOYLE. 

